Rigpa (pure awareness) from the point of view of its essential nature as that which underlies and allows for the arising of appearances and the cognizing of them, with the latter being more prominent. Synonymous with essence rigpa and the cognitive sphere (Skt. dhātu).
Tibetan: ཀློང་། klong
J. Hopkins: Expanse; Sphere
Synonyms: Cognitive space; Cognitive expanse; Open space